3am nipped across the Channel on Monday to see the singer perform an open air gig in Brussels' Grand Place with crooner Tony Bennett, as the duo release their new album, Cheek To Cheek.

And it felt nothing like a Gaga gig - she left the stage twice without getting changed, for a start.

(Image: Vantage)

Dolled up in sequins, the singer is clearly in her element warbling the pair's covers of Anything Goes, It Don't Mean a Thing (If It Ain't Got That Swing) and I Can't Give You Anything But Love. In case we were in any doubt, she's definitely mentioned her love of singing jazz a couple of (thousand) times.

And it's nice to see her demonstrate her vocal abilities without all the distracting outfits. Though there are some theatrics, with pirouetting dancers delivering thrones to the stage for her to perform on.

(Image: Vantage)

Speaking ahead of the gig, she told us that her time with Tony has changed her, so it could be that this subdued (for Gaga) incarnation is here to stay.

She says: "He has taught me so much about life. Tony told me that there's never been a day in his life where he didn't want to sing. That attitude of gratitude is something that should be spread around the world."